Hi All

I'm working in a new Business Centre where several businesses rent offices. They all share a broadband connection which is working fine, and all have their own Workgroups set up. The problem i've got is that I want to hide my Workgroup (called Reception) from the other three Workgroups. At the moment, I can see all four workgroups, which means of course that they can all see me! Is there a way of doing this, or do I have to use a different switch for each office? And also, how do i stop others from joining my Workgroup?

Many thanks.